{
    "mode": "man",
    "parameter": "nngrab",
    "section": "1",
    "url": "https://www.chedong.com/phpMan.php/man/nngrab/1/json",
    "generated": "2026-06-15T16:42:32Z",
    "synopsis": "nngrab [ -c ] keyword",
    "sections": {
        "NAME": {
            "content": "nngrab - news retrieval by keyword (nn)\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "nngrab [ -c ] keyword\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "nngrab  invokes  nn on all USENET articles whose subject (or keyword) field(s) contain an in‐\nstance of keyword.  nngrab is a fast equivalent for:\nnn -mxX -s/keyword all\n\nFor example,\nnngrab tesla\nwill retrieve items concerning Nikola Tesla.\n\nKeyword case is ignored unless -c is specified, and the keyword can be a regular  expressions\n(escaped to avoid conflicts with the shell).  For example,\nnngrab \"n.*tesla\"\n\nThe  range  of  search includes all newsgroups on the system, including ones which are unsub‐\nscribed.\n",
            "subsections": []
        },
        "FILES": {
            "content": "$db/subjects   subject database\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "nn(1), nnspew(8), egrep(1)\n",
            "subsections": []
        },
        "NOTES": {
            "content": "nngrab can be much faster than the equivalent command shown above, if the tertiary news  sub‐\nject  database  generated  by  the  nnspew(8) daemon exists.  To enable the faster operation,\nnnspew must be executed regularly by cron.\n\nnngrab uses egrep(1) to scan the subject database, so if you are not running fast egrep (GNU-\nstyle) this is all for naught.\n\nnngrab  will use a subject database generated by nnspew independent of its age.  Thus, if you\nstop running nnspew, remember to remove the subjects file as well.\n",
            "subsections": []
        },
        "BUGS": {
            "content": "Under version 6.4 onwards, search of the \"Keywords:\" field is not supported.\nSearch on name is not possible either.\n",
            "subsections": []
        },
        "AUTHOR": {
            "content": "James A. Woods, NASA Ames Research Center\nE-mail: jaw@ames.arc.nasa.gov\n\n\n\n4th Berkeley Distribution                    Release 6.6                                   NNGRAB(1)",
            "subsections": []
        }
    },
    "summary": "nngrab - news retrieval by keyword (nn)",
    "flags": [],
    "examples": [],
    "see_also": [
        {
            "name": "nn",
            "section": "1",
            "url": "https://www.chedong.com/phpMan.php/man/nn/1/json"
        },
        {
            "name": "nnspew",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/nnspew/8/json"
        },
        {
            "name": "egrep",
            "section": "1",
            "url": "https://www.chedong.com/phpMan.php/man/egrep/1/json"
        }
    ]
}